Drying apparatus for tiles or clay materials.



N0. 684,704. Patented ct. l5, |901. G. IVILLEFIA & P; 'PFEIFEH D-BYING APPARATUS FR TILES 0R CLAY MATERIALS.

(Application Sled Dec. 6, 1899.) (Np Model.) 2 Sheets-Sheet I.

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DRYING APPARATUS FR TILES 0R CLAY MATERIALS.

(Application filed Dec. 6, 1899.)

2 Sheets-$heet 2.

(No Model.)

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iUnirTno STATES PATENT rrrcn'.

CrUSTAV MLLER AND PAUL'PFEIFER, OF BERLIN, GERMANY.

DRYING APPARATUS FOR TILESV ORCLAY MATERIALS.

SPECIFICATION forming part of Letters Patent No. 684,704, dated October 15, 1901.

bApplication tiled December 6, 1899. Serial No. 739,400. (No model.) Y

VTo all whom t may concern.-

Be it known that we, GUs'rAv MLLER and PAUL PFEIFER, subjects of the German Emperor, and residents of Berlin, Germany, have invented a new and useful Drying Apparatus for Tiles or Clay Materials, of which the following is a specification.

Our invention relates to a new and improved drying apparatus or kiln which is of such a construction that the tiles, the., to be burned can be readily introduced and withdrawn without 'rebuilding the drying-room; in which the heat in that quantity of tiles, dre., already burned is utilized, in addition to otherheating means, for treating the next succeeding quantity, thus reducing the amount of fuel used; in which a constant temperature is maintained,and in which,together with still other advantages, the fire-heat is indirectly applied to the tiles, dre., while a hot-air current is directly applied to the said tiles, dac.

In the accompanying drawings, forming a part ofl this specification, Figure l is a sectional plan View ofthe entire apparatus. Figs. 2 and 3 are vertical sections on the lines @c y and 'y' respectively, of Fig. l lookingin the direction of the arrows. Fig. 4 is a vertical section transversely of the apparatus on the line 'e e' of Fig. l of the iireplace, showing also in dotted lines the doors or closures of the firing-section of the furnace which separate it from the cooling-section.

By reference' to the accompanying drawings it will be seen that we employ tunnels A and B, the former having in one end a fire or burning room, forming a section thereof, shown in the drawings at a, the size of which room is immaterial, it being herein lillustrated as large enough to accommodate one of the cars or wagons u, hereinafter described, loaded with tiles, dre.; but it may be made larger, if desired. The firing-section is provided with a fireplace o.' of any usual or ordinary construction-such for instance, as shown in Fig. dmand also with sliding doors or closures dx, as shown closed in full and open in dotted lines, for separating it from the cooling-section; but as said fireplace and doors are common in the art and are not claimed per se, no further description of the samev is deemed necessary for a clear understanding of the invention. Formed also in the tunnel A and adjoining the burn.- ing-rooln ct (see Fig. l) is a cooling-room ZJ, into which the wagons carry the tiles, clays, &c., from the burning-room Crafter the same are burned. 'This room b is constantly supplied With fresh air entering through the pipes b b2 b3 c, which air passing over and around the clay products just burned absorbs the heat of the latter and is then led out of the room b through leading-pipes ee2 e3 into a pipe m,which latter has an exhaust F through which the air-current, highly heated, is forced into pipes n n2 n3 into the tunnel B. The said tunnel B is utilized solely for dryin g purposes, and the heat necessary therefor is provided through the pipes aforesaid, as well as through other means hereinafter set forth.

The tunnel B may be employed for first drying the clay products prior to burning them or may be employed for drying certain products which require only drying. For facilitating the handling of these products tracks are laid in each tunnel, on which Wagons 'LU and c, carrying the products, are adapted to move, a single track being illustrated in the tunnel A and a double track in the tunnel B.

A pipe d is connected with the fire or burning room a at one end and with a longitudinallyextending tubular radiator Z in the drying-tunnel B at the other. Said pipe d has connection with said radiator and vis at the same end of the tunnel B as the pipes rn n, dre. so that this end of said tunnel is kept hotter than the opposite end. Doors t are fastened to the tunnel B at that end adjacent to the pipe d and doors 7c at the opposite end. It is to be understood, of course, that the burning-room, which in itself forms no part of the invention, is provided with sufficient means to prevent any undue direct waste or escape of its heat, while the opposite end. ot' the tunnel 'A is provided with a door 1o.

Connected to that end of the radiatorZ adjacent the doors 7o is an exhaust G, which serves to set in motion the excessive heat of the burning-room ct through the pipe d and radiator Z. Connected with the tunnel B are a plurality of escape-pipes r r r2, carrying an exhaust H, which latter is adapted to draw out of said tunnel more air than is supplied IOO through the exhaust F aforesaid. This is .obtained in operation by allowing the doors k to remain more or less ajar, so that consequ ently a fresh-air current is drawn in therethrough, whence it is warmed to a degree by contact with the heat still given off at this endof the tunnel B by the radiator Z aforesaid and absorbing the excessive moisture of the products which have been passed into said tunnel B through the doors c and passing out through said exhaust H allows the hotter air in the end of the tunnel B adjacent to the doors i to act sharply'upon the then partiallydried products for the purpose of thoroughly drying the same.

It will thus be seen that we have provided two tunnels, the one provided with means for burning clay materials and then utilizing the heat therein for the purpose of 'heating the second or drying tunnel and the other provided with means for utilizing the heat generated vin botlrparts of the irst-that is, the heat generated in the burning-room and the additional heat found in the materials directly after being burned.

Having Ynowdescribed our invention, what we claim as new, and desire to protect by Letters- Patent, is`

1. A new and useful drying apparatus having aburning-room, a cooling-room,and adrying-tunnel and means for collecting in said cooling-room theheat remaining in the newlyburned material and distributing it directly, together with a supply of fresh air, along said drying-tunnel, incombination with a radiator for indirectly distributing the residual supply of heat from the said burning-room along said tunnel for the purpose of drying this fresh material, as set forth.

2. A new and useful drying apparatus and kilnhaving a burning-room, a cooling-room, a drying-tunnel and means for distributing through said tunnel a supply of heat from said burning-room, in combination with means for collecting in said cooling-room that heat remaining in the newly-burned material and distributing it directly in said tunnel together with :a supply of fresh air for the purpose of drying lmaterial placedin said tunnel, and means inthe drying-tunnel for distributing the residual supply of heat from the burningroom along said tunnel, substantially as described.

3. In a new and useful drying apparatus and kiln, the combination ofa burning-room,

and kiln, the combination of a tunnel, a burning-room, in connection therewith, a second or drying tunnel, tracks extending throughout each of said tunnels, Wagons for carrying the material to be dried and burned and adapted to be moved on said tracks, a longitudinally-eftending,radiator in said drying'-` tunnel, a pipe connecting said radiator and said burning-room,- and meansY for applying the heat found in the lnewly-burned material for heating an air-current and suitable leading pipes for conducting said current, so warmed directly through said drying-tunnel,- substantially as described.

5. A new and useful drying apparatus and kiln for clay materials having a tunnel -provided with a cooling-room, and also a burning-room, a second or drying tunnel, tracks in each of said tunnels, wagonson said tracks, a radiator in said drying-tunnel, a pipe connecting said radiator and burning-room,an exhaust-passage leading from that end of said radiator opposite to that connected with said pipe, fresh-air-supply pipes connected with said cooling-room, leading-pipes also in cominunication with said. cooling-room, an eX- haust-fan connected with said leading-pipes, and adapted to draw an air-current through said cooling-room, other pipes for distributing said air-current into said dryinginnel and an exhaust-fan mounted in said pipes,all combined arranged and operating substantially as shown and described.

In testimony whereof we have hereunto set our hands, in the presence of two witnesses,- this 4th day of November, 1899.

GUsTAv MLLER. PAUL PFEIFER.

Witnesses:

WOLDEMAR HAUPT, WILLIAM MAYNER.

ICO 

